---
title: "Garlic or Black Garlic? | Herbadex"
description: "Black garlic is fresh garlic aged for weeks. The evidence, supplement use and bleeding warnings of regular garlic and black garlic, side by side."
language: en
url: https://herbadex.com/en/compare/garlic-vs-black-garlic/
source: Herbadex (https://herbadex.com)
---

Comparisons

# Garlic or Black Garlic?

Black garlic is not a separate species; it is made by keeping the same plant (Allium sativum) at controlled heat and humidity for weeks. The EMA assessment of garlic preparations does not cover black garlic, whose data come from small studies. The table is built from the sourced cards of both records.

| Aspect | Garlic Allium sativum | Black Garlic Allium sativum |
| --- | --- | --- |
| Strongest evidence | B Limited clinical evidence | B Limited clinical evidence |
| Needs | Heart & Circulation, Immunity | Heart & Circulation |
| Form | Spice | Clay, Soap & Other |
| How to use | Adults take 300–750 mg of a powdered garlic preparation per dose. | Black garlic is eaten as food; one study used about 4 cloves (12 g) a day. There is no verified dose for extract supplements. |
| Pregnancy | Avoid | Caution |
| Breastfeeding | Avoid | Caution |
| Recommended minimum age | From age 12 | Not stated |
| Drug interactions | 1 serious interaction(s) | Interactions reported |
| Duration limit | No limit on duration | Not stated |

## Which one, when?

### Garlic

Garlic powder preparations are traditionally used to help prevent hardening of the arteries, and dry extract for colds; some supplements may slightly lower cholesterol and blood pressure.

[Full card →](https://herbadex.com/en/herb/garlic/)

### Black Garlic

Eaten as a food. In a study of 67 people its extract slightly lowered diastolic blood pressure without meaningfully changing cholesterol; there is no confirmed supplement dose.

[Full card →](https://herbadex.com/en/herb/black-garlic/)

## Good to know

-   People on blood thinners or aspirin should talk to their doctor before taking supplements of either form, and tell their doctor before surgery.
-   People allergic to garlic should also avoid black garlic.
-   These warnings concern supplements; garlic in normal cooking amounts is outside their scope.

## Sources

1.  [European Union herbal monograph on Allium sativum L., bulbus](https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-allium-sativum-l-bulbus_en.pdf) EMA HMPC · 2017 · Monograph Source accessed: October 14, 2026
2.  [Garlic: Usefulness and Safety](https://www.nccih.nih.gov/health/garlic) NIH NCCIH · 2025 · Official agency information Source accessed: October 20, 2026
3.  [Effects of an Optimized Aged Garlic Extract on Cardiovascular Disease Risk Factors in Moderate Hypercholesterolemic Subjects: A Randomized, Crossover, Double-Blind, Sustained and Controlled Study](https://doi.org/10.3390/nu14030405) Nutrients · 2022 · Randomized controlled trial Source accessed: October 24, 2026
4.  [Effect of Black Garlic Consumption on Endothelial Function and Lipid Profile: A Before-and-After Study in Hypercholesterolemic and Non-Hypercholesterolemic Subjects](https://doi.org/10.3390/nu15143138) Nutrients · 2023 · Observational study / case series Source accessed: October 24, 2026

This page is for information only and is not medical advice. If you take medication, are pregnant, or have a health condition, talk to your doctor or pharmacist before use.